About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

Tretmann
Infrared heater

The infrared heater from Tretmann made a very good impression in our test. The product is a fast-heating and heat-storing infrared heater with a thermostat. The material is a full metal housing and the processing was carried out in Europe. The wall heater is safely protected against fire and is TÜV tested and certified. The infrared heater is easy to install in just a few steps thanks to the fixing material supplied and the Quick Up bracket with drilling template. The wall heater is heated using a normal power cable. The product heats the environmentrelatively quickly and effectively, without any annoying noises.
The infrared heater is available in four different versions. The 1000 watt heating panel available to us for testing is kept in a plain white colour and is therefore hardly noticeable on white walls. The heater is installed horizontally and is 120 cm wide and 57 cm high. The depth is only 1.5 cm, which means that the appliance blends even more discreetly into the room.
The infrared heater has no sharp edges or corners.

Advantages

✅ Heats up quickly
✅ Full metal housing
TÜV tested and certified
✅ Made in Europe

Disadvantages

❌ Wired

The first impression

The packaging and labelling

ℹ️ Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. Of course, adequate protection of the product must also be ensured.

CriterionRemarkScore achieved*
Product protectionCarton is sturdy, product sufficiently protected100 points
Sustainability PackagingUnnecessary packaging waste was avoided, items were packed compactly90 points
Product labellingCE labelling available100 points
Total97 points
Weighting: 10%
*The maximum score is 100 points
Packaging infrared heating

The infrared heaterfrom Tretmann arrived for our test in a cardboard box. It was easy to open by removing the adhesive strips and was delivered undamaged.
The box contained the wall heater, the Quick Up bracket with matching screws and plugs, drilling template and operating instructions. The contact details of the German contact person are given on the flyer with the company name, e-mail address and hotline . The manufacturer’s address can be found on the operating instructions. To ensure safe transport, the electric heater was secured inside with polystyrene. In this case, the product was fully protected and the infrared heater was therefore in perfect condition.
The packaging of the wall heater is largely recyclable.
The first impression is very good, as neither the product nor the packaging used was damaged.

After unpacking

Package contents and instructions

ℹ️ Most people’s first impression after unpacking is immediately memorable. Are the contents of the pack complete and does the manufacturer make it as easy as possible for me to use the product straight away?

CriterionRemarkScore achieved*
Package contents & scopePackage contents complete with Quick Up bracket, screws, plugs, drilling template, instructions for use and flyer100 points
Instructions for useWritten in German and 12 other languages, easy to understand90 points
Contact informationCan be found on the enclosed flyer and in the operating instructions100 points
Total97 points
Weighting: 10%
*The maximum score is 100 points

After unpacking, there were several things on the workbench. In addition to the infrared heater with operating instructions and flyer, the drilling template , suitable screws and plugs as well as a Quick Up bracket were included. Information on the use and care of the product can be found in the operating instructions, which are clearly written in both German and 12 other languages. The complete contact information is given on the enclosed flyer and the customer is kindly informed that the German customer service can be contacted at any time using the contact details provided. All in all, this is an exceptionally well thought-out and customer-friendly way of sending a product.

The first time in your hand

Product processing and appearance

ℹ️ Before we start the practical test, we take a close look at the product processing. How high quality are the materials used? Is the look and feel satisfactory?

CriterionRemarkPoints achieved*
Visual appearanceVery good visual appearance100 points
ProcessingGood workmanship, no edges or defects90 points
StabilityProduct appears very stable and rigid100 points
Sustainability of the productSustainability through product longevity90 points
Total95 points
Weighting: 20%
*The maximum score is 100 points
Quick Up bracket with drilling template, screws and wall plugs

The infrared heater from Tretmann is made of high-quality metal with Thermoflow panels. It has a built-in thermostat that can be set to a specific time or just to the desired room temperature. The design of the test device is kept in plain white and is therefore hardly noticeable on white walls. The heater is installed horizontally and is 120 cm wide and 57 cm high. The depth is only 1.5 cm.
The product impresses with its sturdy workmanship and simple design.
Information on sustainability can be found both on the Amazon product page and on the packaging. Thanks to the high-quality materials used, we also assume that it will have a long service life.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

ℹ️ Our practical test is the most relevant and therefore the most important. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

CriterionRemarkPoints achieved*
OperationEasy to use100 points
HeatingHeating up the radiator in minutes100 points
DesignPlain white, unobtrusive90 points
Performance1000 watts, but there are other models100 points
FasteningFrom the manufacturer only fixed wall mounting85 points
Total95 points
Weighting: 40%
*The maximum score is 100 points

Installation of the infrared heater is very quick and easy thanks to the drilling template provided and the matching accessories. However, a second person can help to hang the 14 kg panel securely.
Thanks to the high-quality material, the heater heats up very quickly. This type of heat is particularly suitable for asthmatics and rheumatism patients because the infrared heater does not stir up any more dust.
A thermostat is installed on the heating plate. This allows you to set your desired temperature and this is kept constant when the appliance is in operation.
Only a longer test phase will provide meaningful data on the exact amount of energy costs and the actual efficiency in continuous operation as the sole heat source.
We personally think it’s a shame that the heater has to be permanently installed on the wall, as rollable feet would be ideal to make the infrared heater more versatile for use in different rooms.
In short, however, it is still a great product that is particularly enjoyable in the transitional period.

Price/performance ratio

and ratings from consumers

ℹ️ Finally, we look at how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also analyse consumer reviews and check whether the critical and positive reviews are actually justified.

CriterionRemarkScore achieved*
Price / performance ratioAppropriate95 points
Rating cutNot rated, as there are still too few customer reviews
Total95 points
Weighting: 20%
*The maximum score is 100 points

Prices of up to €219 are charged on the internet for equivalent products. Very inexpensive products are available from as little as €189.90. With a price of €209.99, the infrared heater from Trettmann is currently in the upper price segment. The price ratio is reasonable for the quality and scope of services you get.

Overall result

WeightingScore achieved*
1. packaging & labelling10%97 points
2. package contents & instructions10%97 points
3. product processing & appearance20%95 points
4. in the practical test40%95 points
5. price/performance & consumer reviews20%95 points
Total96 points
*The maximum score is 100 points
Infrared heater
 of the brand 
Tretmann
achieved
94
Points in our test and therefore passed. The test was carried out in the test period
12/22
and is stored in our database under the licence number
221213001
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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